References
- ISO 3746, 1995 Acoustics - Determination of Sound Power levels of Noise Source Using Sound Pressure-Survey Method Using an Enveloping Measurement Surface over a Reflecting Planewith Corrigendum
- HVDC Converter Transformer Noise Considerations, the CIGRE JOINT WORKING Group 12/14, 10, Electra No, 167, August 1996
- "Cheju-Haenam HVDC Manual", made by GEC Alstom, 1993